ok i got a 96 ls integra obd2, and i got a gsr motor that i tried to convert to ob2. so then i bought a obd2 gsr harness and assumed everything would plug in. I plugged in everything and guess what, the obd2 gsr harness has 3 extra sensors around and under my skunk 2 im, and one near the fuse box. So now im guessing maybe its like that??? but someone told me i dont have knock sensor or crank angle on the obd2 harness. I paired up the harness with a obd2a ecu and the car starts fine but i have a engine check light. SHouldnt this bypass knock sensor, crank angle, and is it IAB? since i changed my Intake manifold? i have everything in and the harness is pissing me off. heres my engine stats

-originally 94 jdm gsr motor converted to obd2, changed distributor and injectors
-using a gsr harness obd2, not sure what year exactly
-using a gsr p72 ecu obd2a, just like my p75 obd2a.

 

anyone kno? im stumped

 

did you swap oil pumps? There is a trick to trick the ecu to thinking its on there. I think its on ff-squad or somewere. This should of been a pertty straight foward swap

 

what did you mean? is there supposed to be an oil pump to connect? my main seal started leaking (timing belt area) but thats because i put the seal on wrong probably.

 

theres extra plugs. dunnoe why. i thought obd2 gsr harness would of went all in on any gsr motor.

 

If i'm right the one under the intake manifold is for the intake air by pass and since you have an aftermarket intake there is no were to plug it in dont worry about that.
the other connector should be for the crank signal and since the motor is obd1 the crank signal comes from the distributor, you have a obd2 harness so you are going to have to get the signal from the dizzy and you have to use an obd1 dizzy to do this.
Remember that you have to run extra wires for the vtec, oil pressure sensor, and knock sensor and thats why you have an extra connector close to the fuse box.
I hope this can help you.

 

i will try to add pics to show you which plugs im talking about, i got two codes, i got 21 and 23.

21 VTEC Solenoid Valve (1.8L GSR)
23 Knock Sensor

THe extra connector on the fuse box area looks like the 3 that are already connected and are large plugs. I stll have to run extra wires for vtec and knock? what color is the knock sensor plug, the gsr harness has plugs for vtec solenoid and vtec pressure witch, and knock sensor but im still getting the codes.

 

the car idles nicely, and i noticed that im spilling oil by the oil pan. is that because the oil pump sensor or maybe i put in the crank shaft seal wrong

 

https://honda-tech.com/zeroforum/18

 

i just looked at it but im still confused. the article says in order to swap a obd1 engine in a obd2 car you need to do 4 steps. ive done all 3 except one, the last step says to fool the ecu in thinking the oil pump sensor is connected. But that isnt gonna solve my engine cel. i have a 21 and 23. My vtec pressure switch works but the solenoid doesnt? so do i have to wire up anything from my stock ls ecu harness to the new gsr obd2 ecu? what wires are they.

 

If i'm right the one under the intake manifold is for the intake air by pass and since you have an aftermarket intake there is no were to plug it in dont worry about that.
the other connector should be for the crank signal and since the motor is obd1 the crank signal comes from the distributor, you have a obd2 harness so you are going to have to get the signal from the dizzy and you have to use an obd1 dizzy to do this.
Remember that you have to run extra wires for the vtec, oil pressure sensor, and knock sensor and thats why you have an extra connector close to the fuse box.


EXACTLY!

 

how could i have a obd1 distributor if i have a obd2 harness and the injectors and alternator are also obd2, what if i have a type r obd2 distributor? im not getting any other cels.

1- Distributor plug)
Convert to OBD1 dizzy plugs by cut/splicing OBD1 dizzy plugs and mating them to your OBD2 EWH, color matching the wires - or - find yourself an OBD2 B-series VTEC distributor (any 96-00 B-series VTEC dizzy) which will PnP to your 96-98 EWH (easiest option).


i did the second one, i found a obd2 dizzy...


Modified by dc4teggiehatch at 2:24 PM 11/27/2007

 

obd2 engines have a crank angle sensor mounted within the oil pump. you should swap to an obd2 oil pump.

 

theres a bypass for the oil pump, i dont need it to be connected.

 

here are some pics of the sensors unplugged.

THis is the knock sensor (green) and the grey one is? remind you this is a obd2 gsr harness.


Evap sensor and oil pump sensor? i dont have the evap sensor connected cuz its still on my ls intake manifold, are ls and gsr evap sensors the same? how do i mount it, when i take off the evap it will have two tubes, what hoses go to there?


Or is this one of the hoses that connets to the evap? but i will still need one more hose to connect to the evap, as the evap sits on the intake manifold and is plugged from the bottom.


my LS harness only had 3 plugs, and as you can see there all pluged up except for one.
...you're all set..
Just make sure that if you own a non-VTEC integra that you have VTPS, VTS, and the KS wired in from the ecu plugs out to the shock tower plug and you'll be golden.

ok can someone explain this a little?


Modified by dc4teggiehatch at 3:19 PM 11/27/2007


Modified by dc4teggiehatch at 3:26 PM 11/27/2007

 

cmon ppl help me out!

 

ok on the last picture i dont kno how to run the wires to set vtec solenoid, vtec pressure switch, and knock sensor. Remember im using a GSR engine harness, so that means i have to tap one of those plugs, i dont kno which one, i have no idea how ot physically connect the wires back to the ecu cabin harness. anyone????

 

on the first picture the gray connector is for the intake air bypass, dont worry about that one.
on the second picture you are going to use the oil pump CONNECTOR to get the crank signal from the obd1 distributor to trick the ecu.
on the third pic the hose that has the bolt needs to be connected to the intake for vaccum and the small hose has to be connected to the sensor (purge solenoid)
on for the last pic you have to find a wiring diagram so you can know what are those wires for, I'm pretty sure somebody here knows what do you have to do with this wires but not me sorry.

 

thank you very much God-Driven. SO im assuming i dont need that blue black plug to be plugged in. Just connect the clogged hose to a vaccum right? probably tap it in to the hose right before it connects to the pcv valve with a T connector.

 

anyone got the schimatics or wiring diagram for vtec solenoid, vtec pressure switch, and knock sensor?

 

here you go pin out for both obd a and b

http://technet.ff-squad.com/wiring.obd2b.htm


http://technet.ff-squad.com/wiring.obd2a.htm

 

what gauge wire should i use to connect them to the pins on the ecu? does honda sell these pins? am i crimping anything on the pictures i have above? thank you sti killer! heres a pic from the schematics...



DO i just have to hook up the vtec solenoid, vtec pressure switch? shouldnt my OBD2 gsr harness and OBD2 ls cabin harness support knock??





Modified by dc4teggiehatch at 1:23 AM 11/30/2007

 

^^^^ anyone????

 

u would still need to add those wire to the cabin it self cause the ls don't have the wiring hook up. honda does not carry just the pins but you should be able to to find the pin at radio shack or even find some a a local pick and pull junk yard, just cut and splice. why don't u just get a jumper harness and not have to worry about changing out the oil pump? I rather do that and upgrade my ecu and get it tuned (chrome/hondata/ etc.

*edit* sorry did not see that your from SolCal

 

anyone got a diagram or link on how to tire the vtec and knock from shock tower to ecu? what gauge should i use? crimps, alligator conenctors?